Metadiaptomus is a genus of crustacean in the family Diaptomidae, containing the following species:
Metadiaptomus aethiopicus (Daday, 1910)Metadiaptomus alluaudi (Guerne & Richard, 1890)Metadiaptomus asiaticus (Ulyanin, 1875)Metadiaptomus capensis (G. O. Sars, 1907)Metadiaptomus chevreuxi (Guerne & Richard, 1895)Metadiaptomus colonialis (Douwe, 1914)Metadiaptomus gauthieri Brehm, 1949Metadiaptomus lobulifer (Rylov, 1927)Metadiaptomus mauretanicus Kiefer & Roy, 1942Metadiaptomus meridianus (Douwe, 1912)Metadiaptomus purcelli (G. O. Sars, 1907)Metadiaptomus transvaalensis Methuen, 1910Metadiaptomus vandouwei (Kiefer, 1930)